WARNING: Only spoilers from the current season (Season 2) are whited out.
- Boom, Headshot: Unceremoniously executed by Anslo Garrick.
- Does Not Like Men: According to Reddington. She does seem to like him, though. Beyond that comment this really more of an Informed Attribute.
- Evil Genius: For Reddington.
- Sacrificial Lion: When Anslo Garrick kills her in Episode 9 (very nearly followed by Dembe' in the closing seconds), it very effectively destroys Plot Armour and displays Garrick's level of villainy and threat. Crosses over with Sacrificial Lamb, as she was a recurring character only - the next two-parter that season, which is the Season Finale, demonstrated this even stronger with Berlin's killing of Meera Malik (in very similar circumstances); Luli was intended to demonstrate, for the first time, just how dangerous a high-numbered name on the blacklist (which the Task Force hadn't faced before then) can really be.
- The Smart Girl: She received her PhD in Economics from Stanford University and did head the SAL Capital Group before she was arrested in 2002/06 of insider trading via wire and securities fraud.
- The Stoic: She does not display many emotions until the time of her death.
- Unholy Matrimony: She seems to be in a relationship with Reddington.
- We Hardly Knew Ye: Though she appears in several episodes, she got very little screen time or development by the time she was killed.
- The Dragon: Seemed to fill this role for Reddington in general.
- Chekhov's Gunman: He was actually present in the very first scene of the pilot, delivering a briefcase to Reddington. However, his appearance was so minor that most viewers didn't even notice. He later showed up at the hospital, having provided Reddington with the means of escape, and was present at the Angel Station Hotel, interviewing Tom when a Russian defector was assassinated.
- Color Motif: As per his name, he had a thing for grey.
- Face Death with Dignity: Knows that Reddington will kill him for his betrayal, and is sadly resigned to it, and pleads only that it be made to look like an accident for his wife's sake.
- Literal-Minded:Reddington: (on the phone about a painting) Oh, the blue? The blue looks...Grey: ...Blue.
- The Mole: He's the mole in Reddington's organization. Fitch flipped him by threatening his family.
- Mysterious Past: While the show has told us Dembe's and Zeng's backstories, Grey remains a complete mystery. Helps that he is still alive...well, until "The Good Samaritan Killer," where Reddington personally executes him for betraying him.
- Number Two: To Reddington.
- Sharp-Dressed Man: Always in a nice suit. And he managed to make Navy fatigues look sharp.
"Mr." Kate Kaplan
- Butch Lesbian: Her sexuality is offhandedly referred to in "Dr. James Covington".
- Clean Up Crew: She works as a professional cleaner for Reddington, disposing of any inconvenient dead bodies. Liz has even started to use her.
- Consummate Professional: Kaplan is very calm and professional as "he" goes about "his" work.
- Cool Old Lady/Samus is a Girl: "Mr." Kaplan is actually a woman.
- Bounty Hunter: His occupation when he wasn't investigating on behalf of Reddington.
- Brutal Honesty: The Cowboy straight-up tells Reddington he didn't like him.The Cowboy: Well, you want me to bring her in, there's gonna be a fee, and it's gonna cost you double.Reddington: Oh? Why is that?The Cowboy: 'Cause I don't like you. And that hat makes your head look funny.Reddington: The pot meets the kettle at last.
- Character Death: Was executed by Tom Keen after he got too close in his investigation.
- Jerkass: The Cowboy was rather irritable and grumpy. Notably, he's the only associate of Reddington that didn't like him at all.
- Nice Hat: He's known for wearing a wide-brimmed black cowboy hat, hence his nickname.
- No Name Given: His real name was never revealed.
- Only Known by Their Nickname: He's only known as "The Cowboy."
- Badass: When Ezra saves Liz from being Dr. Creel's human shield in "Dr. Linus Creel".
- Chekhov's Gunman: He's the one who "accidentally" bumped into Liz at one of her motel residences.
- Cold Sniper: His function with Reddington's group. It's mostly seen when he takes out Dr. Creel with a headshot.
- Friendly Sniper: What he tries to be for Liz. Liz, however, doesn't appreciate it.
- Distracted by the Sexy: The decoy Liz uses this to his advantage so that the actual Liz can sneak out and go to the hidden holding area where she locked up Tom.
- Just Following Orders: The reason Ezra uses when Liz tries to talk him into not tailing her. Liz says the same thing when she sics an FBI SWAT team to arrest him in his motel room.
- Sniping Mission: Ezra's main role after he was ordered to shadow Liz.
- Weapon of Choice: Ezra uses a Desert Tactical Arms Stealth Recon Scout Sniper Rifle.
- Badass Bureaucrat: Apparently does most of his work from behind a desk at the DMV, but is a very gifted tracker.
- Bunny-Ears Lawyer: Reddington barely tolerates Glen's constant lies and obnoxious personality, but has plenty of use for his tracking skills.
- Lame Excuse: Apparently tends to throw these out whenever he can't deliver, such as claiming his mother has cancer or that his brother-in-law has Legionnaire's Disease.
- The Napoleon: It takes some pretty serious balls to mouth back at one of the world's most notorious criminals.
- Troll: Gets a big kick out of getting Reddington angry.
- Nerd: Borakove is sporting that look.
- Only Sane Man: What Borakove feels after Reddington asked him to reassembled the shredded documents. See You Have Got to Be Kidding Me! for more details.
- The Reliable One: Reddington relied on him to decipher things that can't be done by physical means. This paid off when Reddington was able to get the needed information on Berlin's faction in "Berlin".
- The Smart Guy: He gets involved in IT duties when Reddington needs him.
- You Have Got to Be Kidding Me!: Borakove when he finds out that Reddington wants him to reassembled shredded clasified documents he and Dembe obtained from the FBI black ops site.Reddington: Put it togetherBorakove: You’re kidding right?Reddington: Borakove, I hate sarcasm and I love puzzles.
- Bilingual Bonus: He speaks fluent Czech and English.
- Clear My Name: What he's doing after he stepped down from Czech politics.
- Frame-Up: What happened to him in "The Kingmaker" courtesy of him.
- Inside Man: Emil serves as this for Reddington in the Czech Republic.
- No Party Given: Emil Dusek's politcal party affiliation is not given.
- Not What It Looks Like: The politician tries to defend himself on television when he was arrested for killing a male escort.